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BC, BCE, Before Christ, Before the Christian Era, Before the Common Era

Both BC and BCE are placed after the year and are written in uppercase. They may be written with or without periods.

BC or B.C. means "Before Christ"—and therefore, before the year 0 (which was thought to be the year in which Christ was born, according to early but inaccurate calculations).

  • Julius Caesar invaded Britannia in 55 and 54 BC.
  • Proto-Indo-European, the ancestor of most European languages, was spoken sometime between 4500 and 2500 B.C.

BCE or B.C.E. means "Before the Christian Era" or "Before the Common Era," with the latter being a more modern and inclusive version.

  • In approximately 1300 BCE, the I Ching was created in China.
  • The entire Italian peninsula had come under the control of Rome by 265 B.C.E.